Compensating driving mechanism.



B. B. FARNHAM.

COMPENSATING DRIVING MECHANlSM. APPLICATION FILED 1UNE24, 1914.

1 1 84, 18?, Patented Apr. 6, 1915,

2 SHEETS-SHEET L Attorneys THE NORRIS PETERS C0,. PHOTO-L|THO.. WASHINGTON, D. C.

B. B. FARNHAM. COMPENSATING DRlVlNG MECHANISM.

APPLICATION FILED JUNE 24,1914.

2 SHEETS-SHEET 2.

Patented Apr. 6

fifij dfzzm Inventor Witnesses Attorneys THE NORRIS PETERS 60., Puma -'.'\'HO. \IJISHINGTON. n

BION IB. FARNHAM, OF BUFFALQ, YORK.

C'OMIEENSATING DRIVING MECHANISM.

Specification of Letters Patent.

Patented Apr. 6, 1915.

Application filed June 24, 1914. Serial No. 847,162.

T all whom it may concern.

Be it known that I, BIoN B. F ARNI-IAM, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Compensating Driving Mechanism, of which the following is a specification.

This invention relates to compensating drive mechanism especially designed for use in paper mills in lieu of what is commonly known as the cylinder mold drive. The cylinder mold which is utilized for picking up pulp. from a vat and carrying it to a web, must, in order to prevent the formation of an imperfect sheet of paper, have some means whereby the speed of the driven shaft will vary as the loadthereon. Various means have been devised heretofore for effecting this result, one example of gearing for this purpose being disclosed in Patent No. 676,492, issued to me on June 18, 1901.

One of the objects of the present invention is to provide a simple form of compensating drive whereby the mechanism heretofore necessary in order to permit variation in the speed of the drive and driven parts may be had without the necessity of employing a complicated arrangement of gearing and levers.

lVith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawing :Figure 1 is a central vertical longitudinal section through the compensating drive. Fig. 2 is a section on line AB Fig. 1. Fig. 3- is a central vertical longitudinal section through a modified form of compensating drive. Fig. 4: is a section on line CD Fig. 3.

Referring to the figures by characters of reference 1 designates a substantially cylindrical casing or housing, each end of which is provided, at its center, with a bearing 2. J ournaled within one of these bearings is a drive shaft 3 which may be provided with a drive pulley 4, there being a suitable standard 5 or the like for supporting the shaft at a point outside of the housing. A bevel gear 6 is secured to the inner end of shaft 3 and is for the purpose hereinafter set forth.

Journaled within the bearing 2 is a driven shaft 7 the outer portion of whichmay be mounted within a standard 8 while the inner end has a bevel gear 9 similar to the gear 6. Motion may be transmitted from shaft 7 through gears 10 and 11 to a shaft 12 supported in any suitable manner.

Loosely mounted on shaft 3 between gear 6 and bearing 2 and on shaft 7 between gear 6 and adjacent bearing 2 are spiders 13 to which are secured buckets 14 which are arranged in an annular series extending practically throughout the width of the interior of housing 1 and outwardly close to the periphery of the housing. These buckets are fitted close together, as shown particularly in Fig. 2 and are so formed and mounted that, as they move downwardly within the housing 1 they will be filled with water or other liquid contained in the housing and as they move upward, they will lift quantities of the liquid until the buckets are brought successively to position directlv over the gears 6 and 9 whereupon the contents thereof will pour out of the buckets and back into the lower portion of the housing 1.

Connected to two diametrically opposed buckets 14 are bearings 15 on which bevel gears 16 are loosely mounted so as to rotate freely, these bevel gears being constantly in mesh with the gears 6 and 9. As shown in Fig. 1, these gears 16 can be journaled on a shaft 17 seated at its ends within the bearings 15.

An opening 18 is provided in the top of the housing 1 through which water or other liquid can be supplied to the interior of the housing. This housing is intended to be about one-third filled as indicated by the line in Fig. 2.

When shaft 3 is rotated, gear 6 will rotate therewith and will cause the gears 16 to rotate upon the shaft 17, thus transmitting motion to gear 9 and causing shaft 7 to revolve. As there is a slight tendency of the gears 16 to travel around the axis of the shaft 3 with the driving gear 6, the water contained within the housing 1 and which fills certain of the buckets, will practically offset this tendency, it being found that, where shaft 3 is given 100 revolutions per minute and shaft 7 r is subjected :to 100 pounds pull, the speed of rotation of said shaft will be reduced to 99 revolutions per minute while the buckets 14 and the gears 16 will make one-half revolution per minute about the axis of the shafts 3 and 7.

- During the revolution of the bucketsthey terially retard the rotation of the buckets.

In this form of device two alining shafts 19 Y rotation on these shafts and formed within Should the shaft 7 be-subjected to increased resistance to its rotation, shaft 3 will continue to rotate at onehundred revolutions per minute and the speed of rotation of the series of buckets within the housing will be correspondingly increased. Thus it will be seen that while shaft 3' is permitted to rotate at a uniform speed, the speed of'rotation of the shafts 7 and '12 can bevaried,

such variation being permitted by reason of the weighted compensating connection betweenthe two shafts 8 and 7. It has been found that the compensating drive such as,

herein described is especially useful in lieu of the complicated mechanism heretofore employed for driving'the cylinder-mold of a paper making machine.

Instead of utilizing buckets mounted for rotation within a casing, a' structure such as illustrated in Figs.- 3 ands may be employed.

and 20 are provided, said shafts correspond ing with the shafts 3 and 7 hereinbefore re-,

ferred to. A cylinder 21 is mounted for the cylinder is a concentric cylindrical partition 22. the space between this partition and the periphery of the cylinder being sub- 7 divided by partitions 23 so as to form sep- 7 arate buckets or compartments 2 each of which has an outlet 25 through the cylindric cal partition 22. Grears 26 extend inwardly from and are adapted to rotate upon the partition 22, these gears meshing with gears 27 and 28 secured to shafts 19 and20 respectively. Thus will'be seen that the structure provides a central compartment 29 in O'opies of this patent may be obtained 'for liquid container housing the same, and a gear interposed between and engaging the.

which the gears 26, 27 and 28are located, this compartment being closed at its ends by the ends of the cylinder 21. The cylinder 21 is adapted to be partly filled with water, the normal water level being indi- "cated by the line W in Fig. 4a. In the opera ation of the device, the entire cylinder is adapted to rotate,'thus causing portions of the liquid within the cylinderto be elevated and to pour out through the aperture 25 into the compartment or chamber '29 from which it will return to the lower buckets. Thismodified structure will operate'in the V samemanner, under similar conditions, as the structure hereinbefore described. This modifiedstructure of course differs from the 1 structure first described, in that it dispenses with a liquid container such as shown at 1, the cylinder 21 constitutingthe liquid con-j tainer in themodified structure. 7

What is claimed is I i :1. The combination with a" drive shaft and a driven shaft, and gears upon said 1 f shafts, of a revoluble series of buckets, a

firstnamed gears and movable with, and revoluble relative to the series of buckets.

2. The combination with a casing, a liquid 1 contained therein, a drive, shaft," a driven shaft, and gears upon the adjoining ends of p the two shafts, of an annular seriesof buckis ets-mounted within the housing and adapted to successively engage and elevate portions of the liquid, and a gear mounted for'rota-- tion and movable with the buckets, saidgear being interposed between and engaging the first-named gears. f

3. The combination with adrive shaft, a driven shaft, gears secured to said shafts, and a gear'interposed'between and engaging the first mentioned 1 gears, of an annula'r series of buckets to'which the interposed gear is connected, said buckets-being revoluble about'the axis of the shafts successively to elevate and discharge a fluent material, there being combined inlets and outlets within the buckets.

my 'own,'I have hereto aflixedmy signature in the presence of two witnesses;

1 V BION'B. FARNHAM; llvitnessesz V E. L; MCLAREN,

RICHARD TEMPLETON.

five cents each, by addressing the Commissioner of Patents, I Washington, 1). c.

In testimony that I claim the foregoing as 

